[R-390] Balanced Antenna Connector

[Barry Scott]

Okay - What I'm seeing there would indicate the two wires are fed
through to the front of the pin and soldered from the front.  I
presume that's what those half-cup ends are for.  Sorry - that didn't
occur to me until I could see the back side.

Thanks,
Barry - N4BUQ

On Fri, Oct 11, 2024 at 12:00 PM Jim Whartenby <old_radio at aol.com> wrote:
>
> I keep forgetting the special requirements of this list.  The photo was stripped so the URL is:
> https://www.rfparts.com/connectors/83-22sp.html?srsltid=AfmBOoqGEFdJMWpMvLuY-Kr6B3BX11S5V2zVN-VhfpK0v1QSugWkUf00
>
>
> The connector is available on eBay from several vendors.
>
>
> Jim
>
>
> Logic: Method used to arrive at the wrong conclusion, with confidence.  Murphy
>
>
> On Friday, October 11, 2024 at 11:38:24 AM CDT, Barry Scott <72volkswagon at gmail.com> wrote:
>
>
> Regarding those connectors (ug-102, pl-284, Amphenol 83-22sp and
> 83-821), I'm not finding a picture or drawing of those that shows how
> the cable connects to the pins.  A picture of the inside (back) of the
> part of the connector where the pins project from the front would be
> helpful but a description might work as well.  I'd like to make sure
> how these are connected to the cable before ordering one.
>
> Thanks,
> Barry - N4BUQ
>
> On Thu, Oct 10, 2024 at 1:53 AM Larry Haney <larry41gm2 at gmail.com> wrote:
> >
> > Hi Barry,  The connector in your picture is the old original twinax connector.  Somebody modified your 390 and changed the new twinax to it.  It was used on the early sp-600s.  The male plug is available online and is known by the name ug-102, pl-284, Amphenol 83-22sp and 83-821.  Sorry I don't have any at the moment.
> >
> > Regards, Larry
> >
> > On Wed, Oct 9, 2024 at 2:00 PM Barry Scott <72volkswagon at gmail.com> wrote:
> >>
> >> Hi Larry,
> >>
> >> Those are the standard twin-ax connectors ("IBM"?).  I have one of
> >> those but this connector is different.  See the pictures below.  Those
> >> sockets appear to take a pin that's about 0.090" in diameter.  I just
> >> don't recognize it.
> >>
> >> Thanks,
> >> Barry - N4BUQ
> >>
> >> On Wed, Oct 9, 2024 at 3:04 PM Larry Haney <larry41gm2 at gmail.com> wrote:
> >> >
> >> > Hi Barry,  There are many manufacturers making the twinax male straight plug today for the balanced jack on the 390s.  There's Pasternack PE4104, PE-S330; ARC - 8-299, AMPHENOL - 82-5589-RFX, 162100; SPC Technology / SAMAR - SPC21084; Connex 162100; Pan Pacific TWX-3501; Aim Cambridge 27-9087, AIM 27-9080; AVA 403000 and others.
> >> >
> >> > If anyone would like one, I'll sell them an AVA 403000 for $3 + postage.
> >> >
> >> > Regards, Larry
> >> >
> >> > On Wed, Oct 9, 2024 at 11:21 AM Barry Scott <72volkswagon at gmail.com> wrote:
> >> >>
> >> >> What is the correct designation for the two-pin antenna connector
> >> >> (balanced) in the R-390/URR (likely the same for the R-390A/URR but I
> >> >> want to be specific just in case).
> >> >>
> >> >> Also, I think Chuck Rippel had a connection contraption that used a
> >> >> resistor (or two) so that 50-ohm unbalanced would match just a bit
> >> >> better using the balanced connection.  He had a website that depicted
> >> >> that but I don't know if that still exists.  Anyone know?
> >> >>
> >> >> Thanks,
> >> >> Barry - N4BUQ
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